glu_experimental: build fails on PPC: error: '_SC_PHYS_PAGES' undeclared etc.

[barracuda156]

This issue is specific to glu_experimental branch (which I need for HiOp back-end):

/opt/local/var/macports/build/_opt_PPCRosettaPorts_math_ginkgo/ginkgo-glu/work/ginkgo-e234eab1bd7afe85dd594638e291a2caf464bfb1/third_party/glu/src/nicslu/source/system.c: In function 'GetSystemMemory':
/opt/local/var/macports/build/_opt_PPCRosettaPorts_math_ginkgo/ginkgo-glu/work/ginkgo-e234eab1bd7afe85dd594638e291a2caf464bfb1/third_party/glu/src/nicslu/source/system.c:166:25: error: '_SC_PHYS_PAGES' undeclared (first use in this function)
  166 |         *phys = sysconf(_SC_PHYS_PAGES) * page_size;
      |                         ^~~~~~~~~~~~~~
/opt/local/var/macports/build/_opt_PPCRosettaPorts_math_ginkgo/ginkgo-glu/work/ginkgo-e234eab1bd7afe85dd594638e291a2caf464bfb1/third_party/glu/src/nicslu/source/system.c:166:25: note: each undeclared identifier is reported only once for each function it appears in
/opt/local/var/macports/build/_opt_PPCRosettaPorts_math_ginkgo/ginkgo-glu/work/ginkgo-e234eab1bd7afe85dd594638e291a2caf464bfb1/third_party/glu/src/nicslu/source/system.c:167:30: error: '_SC_AVPHYS_PAGES' undeclared (first use in this function)
  167 |         *availphys = sysconf(_SC_AVPHYS_PAGES) * page_size;
      |                              ^~~~~~~~~~~~~~~~
/opt/local/var/macports/build/_opt_PPCRosettaPorts_math_ginkgo/ginkgo-glu/work/ginkgo-e234eab1bd7afe85dd594638e291a2caf464bfb1/third_party/glu/src/nicslu/source/thread.c: In function '_BindThreadToCores':
/opt/local/var/macports/build/_opt_PPCRosettaPorts_math_ginkgo/ginkgo-glu/work/ginkgo-e234eab1bd7afe85dd594638e291a2caf464bfb1/third_party/glu/src/nicslu/source/thread.c:270:9: error: unknown type name 'cpu_set_t'
  270 |         cpu_set_t set;
      |         ^~~~~~~~~
make[2]: *** [third_party/glu/src/nicslu/lib/CMakeFiles/nicslu.dir/__/source/system.c.o] Error 1

/opt/local/var/macports/build/_opt_PPCRosettaPorts_math_ginkgo/ginkgo-glu/work/ginkgo-e234eab1bd7afe85dd594638e291a2caf464bfb1/third_party/glu/src/nicslu/source/timer_c.c:59:30: note: each undeclared identifier is reported only once for each function it appears in
/opt/local/var/macports/build/_opt_PPCRosettaPorts_math_ginkgo/ginkgo-glu/work/ginkgo-e234eab1bd7afe85dd594638e291a2caf464bfb1/third_party/glu/src/nicslu/source/thread.c:282:27: error: 'CPU_SETSIZE' undeclared (first use in this function); did you mean 'FD_SETSIZE'?
  282 |                 if (c+1 < CPU_SETSIZE)
      |                           ^~~~~~~~~~~
      |                           FD_SETSIZE

[barracuda156]

Apparently _SC_PHYS_PAGES is not there on Mac in general:
https://stackoverflow.com/questions/30511579/linux-sc-phys-pages-not-working-on-mac-os-x

[upsj]

glu_experimental will hopefully be replaced by develop soon, so we probably won't be able to spend any time addressing this directly.

[barracuda156]

@upsj Got it, no issues. I will wait till updated devel is out, and try building again.